制冷技术2016，Vol.36Issue(5)：1-5,19,6.DOI:10.3969/j.issn.2095-4468.2016.05.102
太阳能热泵热水系统微细通道集热板/蒸发器性能模拟
Performance Simulation of Microchannel Collector/Evaporator for Solar Heat Pump Water Heater
摘要
Abstract
In this paper a new flat-plate collector/evaporator was presented by using microchannel to gain heat from both solar radiation and ambient air. Its main characteristic was using the model of tree branch. The collector/evaporator was made of two pieces of aluminium plates by using the method of cold-rolled huff, which could reduce the contact thermal resistance and improve the heat transfer efficiency of the collector. A simulation model of the collector/evaporator was developed and its thermal performance was analyzed. The performances of heat pump hot water system were evaluated experimentally under different ambients, including heat pump coefficient of performance (COP), heat collecting efficiency and heating time of hot water, etc. The results showed that heating 150 L water with the heat pump from 15 oC to 50 oC, the COP of the whole year was 4.76, and the heating time was 314 min all year around. Meanwhile the heat collecting efficiency increased evidently with the ambient temperature increasing and solar radiation intensity decreasing.关键词
微细通道集热板/蒸发器/太阳能热泵/树形分支模型/集热效率Key words
Microchannel collector/evaporator/Solar heat pump/Model of tree branch/Heat collecting efficiency引用本文复制引用
周伟,张小松..太阳能热泵热水系统微细通道集热板/蒸发器性能模拟[J].制冷技术,2016,36(5):1-5,19,6.基金项目
国家自然科学基金项目（No.51376044），国家科技支撑计划（No.2011BAJ03B14）。 （）
